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Re: Good idea/bad idea?
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Re: Good idea/bad idea?


  • Subject: Re: Good idea/bad idea?
  • From: Alex Zavatone <email@hidden>
  • Date: Thu, 24 Apr 2014 11:08:04 -0400

I guess my real question is "can we substitute the ternary operator for your if statement and if not, why?"

Thanks man.

On Apr 24, 2014, at 10:53 AM, Raheel Ahmad wrote:

> Usually, I would access such variables as properties that are lazy loaded, in which case the accessing code is simply:
>
> 	self.x …
>
> and the accessor is
>
> 	- (NSString *) x {
> 		if (!_x) {
> 			_x = @“yo”;
> 		}
> 		return _x;
> 	}
>
> - Raheel
>
> On April 24, 2014 at 7:36:57 AM, Alex Zavatone (email@hidden) wrote:
>
>> I was just asked yesterday if there is any shorthand in Objective-C for "if this thing = nil, then instantiate a new instance from the class"
>>
>> Something like this:
>>
>> NSString x;
>>
>> if ([x isEqualtoString:nil]) {
>> x = @"yo";
>> }
>>
>> Feel free to replace NSString with any class.
>>
>> And we messed around a bit looking for any shorthand and though it looked like a terrible idea since the comparison is done against integers using the ternary operator, I'd like to know exactly why it's a terrible idea.
>>
>> NSString x;
>>
>> x = (x) ?: @"yo";
>>
>> Thanks in advance.
>> - Alex
>>
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  • Follow-Ups:
    • Re: Good idea/bad idea?
      • From: Roland King <email@hidden>
References: 
 >Good idea/bad idea? (From: Alex Zavatone <email@hidden>)
 >Re: Good idea/bad idea? (From: Raheel Ahmad <email@hidden>)

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